Lighting device for vehicle

Abstract

A lighting device for a vehicle includes a light source configured to perform light irradiation, a blade including a reflective surface configured to reflect light irradiated from the light source toward an area in front of the vehicle, the blade being configured to rotate around a rotation axis, a drive device configured to rotationally drive the blade around the rotation axis, a detector configured to detect a person in front of the vehicle, and a control device configured to, in a case where the person is detected by the detector, control the light source and the drive device such that the drive device rotationally drives the blade to a position where a region in a prescribed range is irradiated with light reflected from the reflective surface of the blade and the light source is turned on.

What is claimed is: 
     
       1. A lighting device for a vehicle, the lighting device comprising:
 a light source configured to perform light irradiation; 
 a blade including a reflective surface configured to reflect light irradiated from the light source toward an area in front of the vehicle, the blade being configured to rotate around a rotation axis, and the reflective surface having a shape twisted such that an angle between the reflective surface and an optical axis of the light irradiated from the light source changes in a circumferential direction of the blade around the rotation axis; 
 a drive device configured to rotationally drive the blade around the rotation axis; 
 a detector configured to detect a person in front of the vehicle; and 
 a control device configured to, in a case where the person is detected by the detector, control the light source and the drive device such that (1) the drive device rotationally drives the blade to a position where light reflected from the reflective surface of the blade will be directed to a region at a prescribed distance spaced away from the person, (2) the drive device stops rotation of the blade with the blade at the position, and (3) after the rotation of the blade is stopped at the position, the light source is turned on. 
 
     
     
       2. The lighting device according to  claim 1 , wherein the region at the prescribed distance spaced away from the person is a region in a visual field range of the person at the prescribed distance spaced away from the person. 
     
     
       3. The lighting device according to  claim 1 , wherein the region at the prescribed distance spaced away from the person is a region near a center of a road in a vehicle width direction of the vehicle with respect to the person. 
     
     
       4. The lighting device according to  claim 1 , further comprising:
 a high beam light source for a high beam configured to perform high beam light irradiation; 
 a second blade for the high beam including a second reflective surface for the high beam configured to reflect high beam light irradiated from the high beam light source toward an area in front of the vehicle, the second blade being configured to rotate around a second rotation axis, and the second reflective surface having a shape twisted such that an angle between the second reflective surface and an optical axis of the high beam light irradiated from the high beam light source changes in a circumferential direction of the second blade around the second rotation axis; and 
 a high beam drive device for the high beam configured to rotationally drive the second blade around the second rotation axis, wherein: 
 the detector is configured to detect an oncoming vehicle; 
 the control device is configured to control the high beam light source and the high beam drive device such that the high beam light source is turned on while the high beam drive device rotates the second blade; and 
 the control device is configured to, in a case where the oncoming vehicle is detected by the detector, control the high beam light source such that the high beam light source is turned off at a timing at which a region corresponding to the oncoming vehicle is irradiated with the high beam light irradiated from the high beam light source.